diff --git a/artproducts/src/artproducts/products.py b/artproducts/src/artproducts/products.py
index 9d86e87..3087aed 100755
--- a/artproducts/src/artproducts/products.py
+++ b/artproducts/src/artproducts/products.py
@@ -22,6 +22,7 @@ from arttools.errors import Error
 from arttools.fstools import Dir
 from arttools.argparse import KvAction
 
+from arttools.telescope import Teldef
 from arttools.errors import RegionsError
 
 from artpipeline.caldb import CaldbInfo